Adjustable support.



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UNITED STATES,

vPATRNT OFFICE.

FREDERICK L. MORGAN, OF PORT IVASI-IINGTON, VISOONSIN.

ADJUSTA'BLE SUPPORT.

SPECIFICATION forming part of lLetters Patent No. 627,517, dated June 27, 1899.

' Application filed February 12, 1896. Serial No. 579,045. (No model.)

To all whom it may concern;

Be it known that I, FREDERICK L. MORGAN, a citizen of the United States, residing at Port Washington, county of Ozaukee, State of Wiscousin, have invented a certain new and useful Improvement in Adjustable Supports; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it pertains to make and use the same,vrefer ence being had to the accompanying drawings, which form a part of this specification.

My invention relates to new and useful improvements in adjustable supports, and relates more particularly to that class of devices Which are used upon chair and stoolirons and in similar locations.

My said'invention consists in the matters hereinafter described,` and pointed out in the appended claim.

In the accompanying drawings,illustrating my invention, Figure l is a vertical sectional View of an adjustable support constructed in accordance with my invention, said section being taken on line l l of Fig. 2. Fig. 2 is a View, partly in plan and partly in transverse section, on line 2 2 of Fig. 1.v

Referring by letter to the drawings, A designates 'a suitable tubular support or vhub which may be constructed .to adapt it for connection with a chair-base or any other desired form of base or support.

B designates a spindle which is fitted within the bore of the hub or support'A and is adapted to rotate therein, said spindle being designed to revolubly support a chair or stool or any other desired object. A suitable sleeve C is revolubly connected with the spindle B in any desired or convenient manner, in the particular construction illustrated in the drawings said sleeve being engaged with a reduced bearingb, formed upon the lower end of the spindle B. In this particular construction any means may be employed for securing the sleeve to the reduced bearing portion b-such, for instance, las a nut LD, screw-threaded upon the lower end of said reduced bearing and retained in position by riveting orheadin g the extremity D of said bear-` ing against the lower face of said nut. Of course any other well-known means may be employed for permanently securing the sleeve in revoluble engagement with the bearing.

One or more suitable slots E are provided in thetubular support A, and a corresponding number of projections or pins F are provided upon the sleeve C and arranged to eX- tend outward through the slot or slots E in the man ner shown. It follows from this construction that the sleeve C, together with the spindle B and the object supported thereby, may be raised or lowered within the bore of the hub and that by securing the projection or projections F in an adjusted position within the slot or slots E so as to support the weight of the spindle and the load thereon the height of said spindle and the chair or other object supported thereby may be regulated at will, while the spindle B and the chair or other -object carried thereby will remain freely revoluble by reason of the revoluble engagement of said spindle with the sleeve. Y

Any suitable or desired means may be provided for engagement withthe pin or pins to secure the same in an adjusted position within the slot or slots, and for this purpose I may employ a device s uch as is illustrated in lthe drawings, which said device comprises a suitable hand-wheel Gr, screw-threaded upon its interior and engaged with the screw- 'Y thread H upon the exterior of the tubular support or hub A, as shown, said hand-wheel being revolubly engaged with the projecting pin or pins F in any suitable or desired manner. In the particular form of construction shown the hand-wheel Gis provided upon the interior of its hub with an annular groove g for engagement with said pin or pins. It follows from this construction that by a rotation of the hand-wheel the same .will `loe caused to travel up or down upon the tubular support or hub A, according to the direction of said rotation, while by the engagement of said hand-wheel with the projecting pin or pins the sleeve C, together with` the spindle and the object supported thereby, will be correspondingly raised or lowered.

Any other suitable or desired device may be employed for securingthe pin or pins in an adj usted position within the slot or slots, the particular form of device illustrated in IOO the drawings being designed simply to illustrate a means of readily adj usting and sec-ur ing the parts within the hul). I would have it understood, therefore, that my present invention contemplates the use of any suitable or desired means for adjusting or permitting the adjustment of the sleeve and spindle Within the bore of the hub and for scouring the same in an adjusted position with respect to the hub.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

An adjustable support comprising a tubu- 

